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Experimental characterization of heat and mass transfer in a horizontal tube falling film absorber using aqueous (lithium, potassium, sodium) nitrate solution as a working pair

  • Datos identificativos

    Identificador: imarina:5653791
    Autores:
    Álvarez MBourouis M
    Resumen:
    © 2018 Elsevier Ltd This paper deals with an experimental study which was carried out to investigate the absorption process with the aqueous solution of nitrates (Li, K, Na) in salt mass compositions of 53, 28 and 19%, respectively, used as a working fluid in a horizontal tube falling film absorber. This working fluid was proposed for use in the last stage of triple-effect absorption cooling cycles driven by high temperature heat sources (up to 260 °C). Taking into account these operating conditions, an experimental mini-absorber was designed and built. In a previous study, the optimal configuration of the solution distributor was determined based on flow visualisations to ensure a uniform distribution of the solution on the external surface of the tubes. A sensitivity study of the operating variables of the absorber was then carried out to evaluate a series of efficiency parameters for the absorber. At the operating conditions established in the experimental tests, the absorption rate ranged from 2.83 to 6.55 g m−2 s−1, the heat transfer coefficient of the falling film varied between 631.9 and 1715.8 W m−2 °C−1, while the mass transfer coefficient was between 2.1 × 10−5 and 6.0 × 10−5 m s−1.
  • Otros:

    Autor según el artículo: Álvarez M; Bourouis M
    Departamento: Enginyeria Mecànica
    Autor/es de la URV: Bourouis Chebata, Mahmoud
    Palabras clave: Vapor Triple-effect absorption cooling cycle Triple-effect absorption Performance Horizontal tube falling film absorber High-temperature heat sources Aqueous nitrates solution Alkitrate
    Resumen: © 2018 Elsevier Ltd This paper deals with an experimental study which was carried out to investigate the absorption process with the aqueous solution of nitrates (Li, K, Na) in salt mass compositions of 53, 28 and 19%, respectively, used as a working fluid in a horizontal tube falling film absorber. This working fluid was proposed for use in the last stage of triple-effect absorption cooling cycles driven by high temperature heat sources (up to 260 °C). Taking into account these operating conditions, an experimental mini-absorber was designed and built. In a previous study, the optimal configuration of the solution distributor was determined based on flow visualisations to ensure a uniform distribution of the solution on the external surface of the tubes. A sensitivity study of the operating variables of the absorber was then carried out to evaluate a series of efficiency parameters for the absorber. At the operating conditions established in the experimental tests, the absorption rate ranged from 2.83 to 6.55 g m−2 s−1, the heat transfer coefficient of the falling film varied between 631.9 and 1715.8 W m−2 °C−1, while the mass transfer coefficient was between 2.1 × 10−5 and 6.0 × 10−5 m s−1.
    Áreas temáticas: Thermodynamics Renewable energy, sustainability and the environment Química Pollution Modeling and simulation Medicina iii Medicina ii Mechanical engineering Materiais Management, monitoring, policy and law Interdisciplinar Industrial and manufacturing engineering Geografía Geociências General energy Fuel technology Engineering, chemical Engenharias iv Engenharias iii Engenharias ii Engenharias i Energy engineering and power technology Energy (miscellaneous) Energy (all) Energy & fuels Electrical and electronic engineering Economia Civil and structural engineering Ciências ambientais Ciências agrárias i Ciência de alimentos Ciência da computação Building and construction Biotecnología Biodiversidade Administração pública e de empresas, ciências contábeis e turismo
    Acceso a la licencia de uso: https://creativecommons.org/licenses/by/3.0/es/
    ISSN: 03605442
    Direcció de correo del autor: mahmoud.bourouis@urv.cat
    Identificador del autor: 0000-0003-2476-5967
    Fecha de alta del registro: 2024-09-07
    Versión del articulo depositado: info:eu-repo/semantics/acceptedVersion
    Enlace a la fuente original: https://www.sciencedirect.com/science/article/abs/pii/S036054421830063X?via%3Dihub
    URL Documento de licencia: https://repositori.urv.cat/ca/proteccio-de-dades/
    Referencia al articulo segun fuente origial: Energy. 148 876-887
    Referencia de l'ítem segons les normes APA: Álvarez M; Bourouis M (2018). Experimental characterization of heat and mass transfer in a horizontal tube falling film absorber using aqueous (lithium, potassium, sodium) nitrate solution as a working pair. Energy, 148(), 876-887. DOI: 10.1016/j.energy.2018.01.052
    DOI del artículo: 10.1016/j.energy.2018.01.052
    Entidad: Universitat Rovira i Virgili
    Año de publicación de la revista: 2018
    Tipo de publicación: Journal Publications
  • Palabras clave:

    Building and Construction,Civil and Structural Engineering,Electrical and Electronic Engineering,Energy & Fuels,Energy (Miscellaneous),Energy Engineering and Power Technology,Engineering, Chemical,Fuel Technology,Industrial and Manufacturing Engineering,Management, Monitoring, Policy and Law,Mechanical Engineering,Modeling and Simulation,P
    Vapor
    Triple-effect absorption cooling cycle
    Triple-effect absorption
    Performance
    Horizontal tube falling film absorber
    High-temperature heat sources
    Aqueous nitrates solution
    Alkitrate
    Thermodynamics
    Renewable energy, sustainability and the environment
    Química
    Pollution
    Modeling and simulation
    Medicina iii
    Medicina ii
    Mechanical engineering
    Materiais
    Management, monitoring, policy and law
    Interdisciplinar
    Industrial and manufacturing engineering
    Geografía
    Geociências
    General energy
    Fuel technology
    Engineering, chemical
    Engenharias iv
    Engenharias iii
    Engenharias ii
    Engenharias i
    Energy engineering and power technology
    Energy (miscellaneous)
    Energy (all)
    Energy & fuels
    Electrical and electronic engineering
    Economia
    Civil and structural engineering
    Ciências ambientais
    Ciências agrárias i
    Ciência de alimentos
    Ciência da computação
    Building and construction
    Biotecnología
    Biodiversidade
    Administração pública e de empresas, ciências contábeis e turismo
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